Method for extracting tannin from banana stems and fruit axes

A banana stem and tannic acid technology, which is applied in chemical instruments and methods, sugar derivative preparation, sugar derivatives, etc., can solve the problems of high fire safety requirements in workshops, high flocculant prices, and large engineering investment. Achieve good ecological and social benefits, low development costs, and low labor intensity

Inactive Publication Date: 2011-05-25
黄一君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: although the process is traditionally feasible, due to the use of the flocculant dosage process, the energy consumption is high and the pollution is large; especially the flocculant has high price, high volatility, poor production conditions and high fire safety requirements in the workshop , and the entire workshop needs to be designed according to explosion-proof engineering, and the engineering investment is large
However, the water content of banana stems and fruit shafts is 90% and has not been developed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This method for extracting tannic acid from banana stems and fruit shafts utilizes banana stems and fruit shafts as raw materials for extracting tannic acid; it comprises the following steps:

[0028] ①Material collection and crushing: The fresh banana stems and fruit shafts chopped down by the fruit growers are stored in a centralized manner, and the materials are crushed into small pieces by an ordinary hay cutter.

[0029] ②Soft rubbing: Feed the small pieces obtained by crushing directly into the soft rubbing machine for silk rubbing, and decompose the fibers and pith;

[0030] ③Squeezing and collection of raw liquid: Separating the slag liquid obtained in ② by pressing, squeezing out the original juice of banana stems and fruit shafts; putting the filtered banana stem and fruit shaft juice into plastic barrels, and collecting them into banana stems Stock solution of rods and fruit shafts;

[0031] ④ Concentration: Heat the original solution of banana stems and fru...

Embodiment 2

[0041] This method for extracting tannic acid from banana stems and fruit shafts utilizes banana stems and fruit shafts as raw materials for extracting tannic acid; it comprises the following steps:

[0042] ①Material collection and crushing: The fresh banana stems and fruit shafts chopped down by the fruit growers are stored in a centralized manner, and the materials are crushed into small pieces by an ordinary hay cutter.

[0043] ②Soft rubbing: Feed the small pieces obtained by crushing directly into the soft rubbing machine for silk rubbing, and decompose the fibers and pith;

[0044] ③Squeezing and collection of raw liquid: Separating the slag liquid obtained in ② by pressing, squeezing out the original juice of banana stems and fruit shafts; putting the filtered banana stem and fruit shaft juice into plastic barrels, and collecting them into banana stems Stock solution of rods and fruit shafts;

[0045] ④ Concentration: Heat the original solution of banana stems and fru...

Embodiment 3

[0055] The method for extracting tannic acid from the stem and the fruit axis of the banana tree uses the banana stem and the fruit axis as the raw material for extracting the tannic acid; it comprises the following steps:

[0056] ①Material collection and crushing: The fresh banana stems and fruit shafts chopped down by the fruit growers are stored in a centralized manner, and the materials are crushed into small pieces by an ordinary hay cutter.

[0057] ②Soft rubbing: Feed the small pieces obtained from the crushing machine directly into the soft rubbing machine for silk rubbing, and use the Fule brand soft rubbing machine produced in Zhengzhou, Henan Province to decompose the fibers and pith;

[0058] ③Squeezing and collection of raw liquid: Separating the slag liquid obtained in ② by pressing, using a double-screw press produced in Xinxiang, Henan Province to squeeze out the original juice of banana stems and fruit shafts; The juice is packed in a plastic bucket and colle...

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PUM

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Abstract

The invention discloses a method for extracting tannin from banana stems and fruit axes, and the method comprises the following steps: (1) collecting materials, and shredding the materials; (2) kneading into threads; (3) squeezing, and collecting a stock solution; (4) concentrating; (5) preparing an animal glue solution for later use: adding animal glue into a saturated sodium chloride solution, and heating to dissolve the animal glue; (6) preparing an ethanol solution which is composed of 45-50 parts of 95wt% ethanol, 45-50 parts of softened water and 0.5-1 part of 60wt% hydrochloric acid; (7) stirring and clarifying; (8) filtering; (9) extracting tannin; and (10) drying at a low temperature to obtain the finished tannin product. The method provided by the invention has the advantages of low development cost and low labor intensity, and is convenient and practical. By utilizing the method disclosed by the invention, wastes are changed into valuable substances, resources are fully utilized, and new raw material resources are provided for the chemical industry in China; the required equipment is simple, and can be easily mastered by common working personnel in enterprises; no chemical assistant which is harmful to the environment is needed in the extraction process; and the method disclosed by the invention breaks through the traditional plant tannin extraction process, and performs an active function for protecting the ecology.

Description

technical field [0001] The invention relates to a method for extracting tannin, in particular to a method for extracting tannin from banana stems and fruit shafts. Background technique [0002] Tannic acid, alias: tannin, tannin, tannic acid. According to the definition of Bategnt, it refers to water-soluble polyphenolic compounds with a molecular weight of 500-3000 that can precipitate proteins and reduce biological activity. The application has expanded to medicine, food and other fields, including related low molecular weight polyphenols. Tannins are widely found in Chinese herbal medicines (such as five times, pomegranate peel, Agrimony) and plant foods (cereal beans such as barley, sorghum, mung beans, fruits and vegetables such as onions, grapes, tea). Tannin and protein, vitamins and minerals Substances form precipitated complexes, are considered anti-nutrients, and can degrade product quality through pro- or non-bacterial-promoted oxidative browning. However, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07G99/00C07H13/08C07H1/08
Inventor 黄一君黄润燕
Owner 黄一君
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